Do you think Katy Perry contracted the Miley Cyrus Virus?

Okay, so as many know, there is a disease going around the media called the Miley Cyrus Virus (MCV) where female celebrities suddenly just lose their shit and start behaving like actual trash. Before the books were updated, this was called the Brittany Bitch Syndrome (BBS), but Miley Cyrus Virus has a better ring to it, and like, who the fuck is Brittany Spears anyway, right? Celebrities that have been affected by this ailment include:

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Every time I see one of these young women doing shit like this, I think, "Great... another fine example for the young women of America." Whatever gets into these idiots brains, I'd like to know.

The LAST thing I want is for my granddaughters to see them and think - this is how you should behave as a young woman. I've seen far too many girls be totally wonderful until about age 14-17. Then, for some reason they turn into total unreasonable, incredible, total bitches. Like... what happens?